Abstract
Adiabatic and multimode interference (MMI) 3-dB couplers based on silicon-on-insulator rib waveguides were fabricated and measured. For testing purposes, pairs of identical couplers were cascaded to form Mach-Zehnder interferometers. The adiabatic couplers showed excess on-chip loss of ~0.5 dB, extinction ratio (ER) of 15-20 dB, and a wide spectral range. The MMI couplers processed on the same wafer showed similar loss per coupler, higher ER, and limited spectral characteristics.
Original language | English |
---|---|
Pages (from-to) | 2287-2289 |
Journal | IEEE Photonics Technology Letters |
Volume | 18 |
Issue number | 21 |
DOIs | |
Publication status | Published - 2006 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Integrated optics
- optical device fabrication
- optical planar waveguide couplers
- silicon-on-insulator (SOI) technology